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2. The marginal cost of producing an item is the rate at which its cost changes with respect to the number of items produced. Thus, $C(x)$ is the cost of producing $x$ items, and the marginal cost is $C'(x)$. The marginal cost approximates the additional cost necessary to produce one additional item. Thus $C'(x)$ is the approximate cost incurred to produce the $(x+1)$ nth item. Supposed the total cost of producing $x$ items is given by the function $C(x) = 0.001x^3 + 0.025x^2 + 3x + 5$. Determine the marginal cost of producing the 51st item.

          2. The marginal cost of producing an item is the rate at which its cost changes with respect to the number of items produced. Thus, $C(x)$ is the cost of producing $x$ items, and the marginal cost is $C'(x)$. The marginal cost approximates the additional cost necessary to produce one additional item. Thus $C'(x)$ is the approximate cost incurred to produce the $(x+1)$ nth item. Supposed the total cost of producing $x$ items is given by the function $C(x) = 0.001x^3 + 0.025x^2 + 3x + 5$. Determine the marginal cost of producing the 51st item.
        
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2. The marginal cost of producing an item is the rate at which its cost changes with respect to the number of items produced. Thus, C(x) is the cost of producing x items, and the marginal cost is C'(x). The marginal cost approximates the additional cost necessary to produce one additional item. Thus C'(x) is the approximate cost incurred to produce the (x+1) nth item. Supposed the total cost of producing x items is given by the function C(x) = 0.001x^3 + 0.025x^2 + 3x + 5. Determine the marginal cost of producing the 51st item.

Added by Joaquin A.

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Calculus: Early Transcendentals
Calculus: Early Transcendentals
James Stewart 8th Edition
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The marginal cost of producing an item is the rate at which its cost changes with respect to the number of items produced. Thus, C is the cost of producing x items and the marginal cost is Cx. The marginal cost approximates the additional cost necessary to produce one additional item. Thus, Cx is the approximate cost incurred to produce the x+1 nth item. Suppose the total cost of producing x items is given by the function C = 0.001x + 0.025x^2 + 3x + 5. Determine the marginal cost of producing the 51st item.
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Transcript

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00:02 C of x is our cost function, and we'd like to know the marginal cost function.
00:06 That means we need to take the first derivative of our cost function.
00:11 So we have 3x squared plus 2 times 20 is 40x plus 90.
00:21 That's our marginal cost function.
00:24 We also want to know what is the marginal cost for the 50th item.
00:30 So we'll say c prime of 50.
00:36 We have three times 50 squared plus 40 times 50 plus 90.
00:49 And a little calculator magic later, we end up with $9 ,590...
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